$.fn.extend({
    "preventScrollBubble":function(){
        $(this).each(function(){
            var _this = this;
            if(navigator.userAgent.indexOf('Firefox') >= 0){   //firefox
                _this.addEventListener('DOMMouseScroll',function(e){
                    _this.scrollTop += e.detail > 0 ? 60 : -60;
                    e.preventDefault();
                },false);
            }else{
                _this.onmousewheel = function(e){
                    e = e || window.event;
                    _this.scrollTop += e.wheelDelta > 0 ? -60 : 60;
                    return false;
                };
            }
        })
    }
});